PLATE VI. — Pleistocene Lake Benches. 



FiGL'RE 1. — Transverse section of the Ircquois bench and sea-clifF, Scar- 



boro' Bluffs. 



Figure 2. — Iroquois bench and sea-cHff, and Hght moraiiiic topo- 

 g-raphy of the third till sheet, Scarboro' Bluffs. 



